Specifications include, but are not limited to: Contractor shall furnish all materials, equipment, supplies, tools, labor, and incidentals necessary to complete the maintenance service of existing concrete sidewalks by lifting or raising to remove trip hazards with results that produce a smooth transition between concrete panels. ; 5.2.1 Cement Slurry Mixture: The slurry mixture used for raising concrete slabs shall be composed of lime, sand, ground clay, Portland Cement (Type 1A conforming to A.S.T.M. C150), and fly ash. MATERIAL PERCENTAGE Ground Clay: passing #4 sieve 100% 50% *Lime: I Fly Ash Mixture passing #50 Sieve 100% 27% Sand: passing #4 sieve 100% 15% Portland Cement: 3-1/2 bag mix (approx.) 8% Mixing equipment shall be a self-contained continuous mixer with calibrated mixing and delivery capability, carrying all water, cement and aggregate needed for the job site. The continuous mixer shall meet or exceed the Standards of Calibration as set forth by the Volumetric Mixer Manufacturer Bureau (VMMB